Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos eventos para bob murphy?
 ###Tabelas: CREATE TABLE masterton_district (masterton_district_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Years VARCHAR, Gender VARCHAR, Area VARCHAR, Authority VARCHAR, Decile INT) CREATE TABLE list_of_countries_by_2010_emissions_estimates (list_of_countries_by_2010_emissions_estimates_id AUTO_INCREMENT PRIMARY KEY, Country VARCHAR, CO2 emissions VARCHAR, Area (in km 2 ) INT, Population INT, Emission / Person INT) CREATE TABLE leaders (leaders_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Player VARCHAR, Country VARCHAR, Earnings ( $ ) INT, Events INT, Wins INT) CREATE TABLE european_tour_wins_9 (european_tour_wins_9_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Winning score VARCHAR, To par VARCHAR, Margin of victory VARCHAR, Runner(s)-up VARCHAR) CREATE TABLE 2008_season_players (2008_season_players_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Squad no INT, Appearances INT, Tries INT, Goals INT, F Goals INT, Points INT, Contract ends INT)  
SELECT MAX Events FROM leaders WHERE Player = bob murphy